Ernesto and Serena join forces with the resistance to infiltrate the Citadel and attempt to rescue Orion, but are actually on a rescue mission for the toys Kylie locked away. At the resistance HQ, the two meet Rat's child - which will eventually grow up to be Ernesto! Meanwhile, Kylie is impatient to learn the Sparticles plan, she has Dora trick Orian to connect to Reese and she accidentally tipping them off about the Resistance's plan and their own.